Perhaps you should try some spelling variations:
da literatura » la literatura, a literatura, de literatura
filosofia da » filosofia de, filosofia del, filosofia e
texten das » texten des, text das, texten aus
texten der » texte der, text der
studium la » studium a, studium als, studium das

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((texten das) OR (texten der)) studium la filosofia da literatura*.